Classify the input using one of these labels: neutral, positive, and negative. @SouthwestAir Is there any way to add a Known Traveler Number to an existing reservation online?  If not, why not?
system
Classify the input using one of these labels: neutral, positive, and negative. @SouthwestAir Is there any way to add a Known Traveler Number to an existing reservation online?  If not, why not?
user
neutral
assistant
system
Classify the input using one of these labels: neutral, positive, and negative. @SouthwestAir Is there any way to add a Known Traveler Number to an existing reservation online?  If not, why not?
user
positive
assistant